Reptiles.
The plural of reptile is reptiles. As in "the reptiles stared back".
The singular is reptile, the plural is reptiles, and the plural possessive is reptiles' (e.g. The reptiles' owners did not know their origin.)
The noun reptiles is the plural form of the singular noun reptile.The singular possessive form is reptile's.The plural possessive form is reptiles'.Examples:There were tracks of several different reptiles in the mud. (plural)One of the reptile's tracks led into the tall grass. (singular possessive)The rest of the reptiles' tracks led to the water. (plural possessive)
There is no plural form. Do and Do not are verbs
The plural form of him, her, or it is them. (objective pronouns)
Bridges is the plural form of bridge.
The plural form of "is" is "are."
The plural form of "was" is "were."
The plural form of "I" is "we."
The plural form of mouth is mouths. The plural form of month is months. The Mounth is a range of hills in Scotland and does not have a plural form.
"Groceries" is the plural form of "grocery."
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.